QA output created by 221
/xfstests-dev/tests/btrfs/221: line 41: _supported_os: command not found
--- before delete ----
0000000 abab abab abab abab abab abab abab abab
*
4000000
0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
*
4000000
--- after delete ----
0000000 abab abab abab abab abab abab abab abab
*
4000000
0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
*
4000000